It's a text based medium, isn't the idea of color based biased kind of moot? Like are we ANSI coloring our desc blocks to make it more obvious? Isn't the idea of marginalized classes also kind of negated by settings that aren't modern or alternate modern?
For example I'm latino, I'm Puerto rican, my grand parents were born and raised in Puerto Rico, my mum in chicago, me in chicago. That's right if Puerto rico were a foreign country and not a US territory I'd be a 2nd generation immigrant!
I play a guy on Arx I describe as "painfully pale" in complexion. Why? Roster system. Meanwhile on horrormu and grey harbor I played people PB'd by Pedro Pascal because he's a good latino/hispanic stand in and not to crazy attractive.
My Pedro pascal PBs and my painfully pale white guy with redhair PBs have never been treated differently. Ever.
I get the idea broaden your horizons, do some research, maybe think about what kind of language and tropes you are using to write something you aren't. On the same hand I would never condemn RPers for just going with whatever setting or personal nationality they are or whatever nationality they think is cool. Given the primarily text based medium and settings that have almost none of the systemic issues of our own.
EDIT - Neither condemn RPers or make it a reflection on the hobby if people just played whatever even if it ended up being majority white.